The cross that will produce only horned Roan offspring in cattle is the red bull with the white cow. However, these offspring would be able to create either red, white, or Roan.
If a cow showed a dominant phenotype, a testcross would be difficult because it involves crossing the individual with a homozygous recessive individual to determine its genotype. Since cows normally produce only one offspring from each mating, it may take several generations of test crosses to reliably determine the genotype.
In genetics, you can either have a dominant allele (A) or a recessive allele (a). Being homozygous means that you have both of either a dominant or a recessive allele (ie you are either AA or aa). If the trait is a recessive trait, then you need to have it be homozygous recessive in order to express that trait. Hope this was helpful! :-)
100% because BB is dominant over bb and all the crosses make Bb
The taxon that includes only organisms that can successfully interbreed is called a species. Members of the same species are able to mate and produce viable, fertile offspring.
Impossible. You can only be heterozygous or homozygous, not both.
There is a 25% chance (1 in 4) that the offspring will be homozygous for the trait. This is because when both parents are heterozygous (Aa), they can pass on either the dominant allele (A) or the recessive allele (a) to their offspring, resulting in a 1 in 4 chance of the offspring receiving the recessive allele from both parents and becoming homozygous (aa) for that trait.
No, an AAA and SS combination can only produce an Aa genotype. The offspring will inherit one allele from each parent, resulting in a heterozygous genotype. For an AAA genotype to be produced, both parents must have the same alleles for the specific gene.
Not all vertabrates do, only mammals produce milk for offspring.
The cross that will produce only horned Roan offspring in cattle is the red bull with the white cow. However, these offspring would be able to create either red, white, or Roan.
The maximum number of offspring that parent organisms can produce varies depending on the species. Some organisms can produce thousands of offspring in a single reproductive event, while others may only produce a few offspring. In general, organisms with shorter lifespans tend to produce more offspring compared to those with longer lifespans.
A trait determined by a single gene with two alleles will typically have only two possible phenotypes, one associated with each allele. Examples include pea plant seed color (yellow or green) and human blood type (A or B).
No, only organism in the same species can produce fertile offspring. Organisms from the same class sometimes can reproduce, but they cannot produce fertile offspring.
Geneticists can perform a test cross by crossing the dominant organism with a homozygous recessive organism. If any offspring display the recessive trait, then the dominant organism is heterozygous. In the absence of recessive offspring, the dominant organism is likely homozygous.
The homozygous dominant individual can only pass on the dominant allele and the homozygous recessive individual can only pass on the recessive allele, therefore all offspring will be heterozygous and have the dominant phenotype.
Tigers can only usually have 3-4 cubs.
To create a punnett square showing offspring that are heterozygous, you can cross a heterozygous parent (e.g., Aa) with a homozygous recessive parent (e.g., aa). This will result in half of the offspring being heterozygous (Aa) in the punnett square.